BEGIN; BEGIN EXPLAIN select p_brand, p_type, p_size, count(distinct ps_suppkey) as supplier_cnt from partsupp, part where p_partkey = ps_partkey and p_brand <> 'Brand#45' and p_type not like 'ECONOMY BURNISHED%' and p_size in (20, 15, 41, 45, 5, 48, 34, 27) and ps_suppkey not in ( select s_suppkey from supplier where s_comment like '%Customer%Complaints%' ) group by p_brand, p_type, p_size order by supplier_cnt desc, p_brand, p_type, p_size; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------- Sort (cost=455988.15..456057.28 rows=27652 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=446297.81..453948.11 rows=27652 width=40) -> Sort (cost=446297.81..447772.57 rows=589902 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=57898.34..389755.36 rows=589902 width=40) Hash Cond: (partsupp.ps_partkey = part.p_partkey) -> Seq Scan on partsupp (cost=16.34..270974.34 rows=4000000 width=8) Filter: (NOT (hashed SubPlan 1)) SubPlan 1 -> Index Scan using supplier_s_suppkey_idx_like on supplier (cost=0.00..16.09 rows=100 width=4) -> Hash (cost=54195.12..54195.12 rows=294951 width=40) -> Bitmap Heap Scan on part (cost=5721.44..54195.12 rows=294951 width=40) Recheck Cond: (p_size = ANY ('{20,15,41,45,5,48,34,27}'::integer[])) Filter: ((p_brand <> 'Brand#45'::bpchar) AND ((p_type)::text !~~ 'ECONOMY BURNISHED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5647.71 rows=318067 width=0) Index Cond: (p_size = ANY ('{20,15,41,45,5,48,34,27}'::integer[])) (17 rows) COMMIT; COMMIT